Journal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
Volume 57, Issue 14, Pages 2943-2955Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2015.1079165
Keywords
Gut microbiota; gut-associated lymphoid tissues; polysaccharides; inflammatory bowel disease
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Funding
- National Natural Science Foundation of China for Excellent Young Scholars [31422042]
- National Key Technology R & D Program of China [2012BAD33B06]
- Program for New Century Excellent Talents in University [NCET-12-0749]
- Project of Science and Technology of Jiangxi
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The human gut is colonized with a vast and diverse microbial ecosystem, and these bacteria play fundamental roles in the well being of our bodies. Gut-associated lymphoid tissues, the largest mucosal immune system, should never be overlooked for their profound effect in maintaining the host immunity. Therefore, we discussed the relationship between gut immunity and host health, primarily from two aspects: the homeostasis of gut microbiota, and the function of gut-associated lymphoid tissues. Polysaccharides, widely concerned as bioactive macromolecules in recent centuries, have been proved to benefit the intestinal health. Dietary polysaccharides can improve the ratio of probiotics, regulate the intestinal microenvironment like decreasing the gut pH, and stimulate the macrophages or lymphocytes in gut tissues to fight against diseases like cancer. Based on various experimental and clinical evidence, the impacts of dietary polysaccharides on intestinal health are summarized, in order to reveal the possible immunomodulatory mechanisms of polysaccharides.
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